wuputah

count = ObjectSpace.each_object { }
100_000.times do |i|
  String.new
  c = ObjectSpace.each_object { }
  if c < count
    puts "GC - Iteration #{i} - Was #{count} now #{c}"
  end
  count = c
end

wuputah

1_000_000.times do |i|
  String.new
  if i % 1000 == 0
    puts ObjectSpace.each_object { }
  end
end

wuputah

abstract (1.0.0)
actionmailer (2.2.2, 2.2.1, 2.2.0, 2.1.2, 2.1.1, 2.1.0, 2.0.4, 2.0.2, 1.3.6, 1.3.3, 1.3.0)
actionpack (2.2.2, 2.2.1, 2.2.0, 2.1.2, 2.1.1, 2.1.0, 2.0.4, 2.0.2, 1.13.6, 1.13.3, 1.13.0)
actionwebservice (1.2.6, 1.2.3, 1.2.0)
activerecord (2.2.2, 2.2.1, 2.2.0, 2.1.2, 2.1.1, 2.1.0, 2.0.4, 2.0.2, 1.15.6, 1.15.5, 1.15.3, 1.15.0)
activeresource (2.2.2, 2.2.1, 2.2.0, 2.1.2, 2.1.1, 2.1.0, 2.0.4, 2.0.2)
activesupport (2.2.2, 2.2.1, 2.2.0, 2.1.2, 2.1.1, 2.1.0, 2.0.4, 2.0.2, 1.4.4, 1.4.3, 1.4.2, 1.4.0)
acts_as_ferret (0.4.3, 0.4.1)
addressable (2.0.2, 2.0.1, 2.0.0)
ambition (0.5.4, 0.5.2)

wuputah

Processing PagesController#show (for 127.0.0.1 at 2009-02-15 02:00:32) [GET]
  Session ID: 4df3fedb8bf63b3df27834b84eb3e657
  Parameters: {"slug"=>"ruby_on_rails", "action"=>"show", "controller"=>"pages", "section"=>"consulting"}
  SQL (0.000213)   SET NAMES 'utf8'
  SQL (0.000070)   SET SQL_AUTO_IS_NULL=0
Rendering template within layouts/application
Rendering /pages/consulting/ruby_on_rails
Rendered layouts/_ruby_rags_button (0.00023)
Rendered layouts/_head (0.00075)
Rendered layouts/_nav_bar (0.00200)

wuputah

begin
  sleep(1000)
rescue Exception
  raise "Oh how awful, I was sleeping here!"
end

wuputah

The query:

select episodes.id from episodes
  left outer join links on links.link_id = episodes.link_id
  where episodes.link_id > 0 and links.link_id is NULL

The Rails:

Episode.find(:all, :include => :link, :conditions => "episodes.link_id > 0 and links.link_id is NULL")

wuputah

class CacheManager
  def self.expire(*globs)
    cache_dir = ActionController::Base.page_cache_directory
    globs.each do |glob|
      begin FileUtils.rm_r(Dir.glob(File.join(cache_dir, glob))) rescue Errno::ENOENT ; nil end
      RAILS_DEFAULT_LOGGER.info("Expired pages: #{glob}")
    end
  end

  def self.clear

wuputah

def check_ilom
  probe_ilom.each do |probe|
    unless probe.include?("ok")
      return NagiosPlugin::CRITICAL
    end
  end
  NagiosPlugin::OK
end

wuputah

  def events_for_me limit = 10
    essay_ids = essays.all(:select => :id).map(&:id)
    recording_ids = recordings.all(:select => :id).map(&:id)
    essay_sql = "(resource_id IN (#{essay_ids.join}) AND resource_type= 'Essay')"
    recording_sql =  "(resource_id IN (#{recording_ids.join}) AND resource_type= 'Recording')"
    my_comments = essays.ids.blank? ?  [] : Comment.all(:conditions => "#{essay_sql} OR #{recording_sql}") 
    my_corrections = essays.ids.blank? ?  [] : Correction.all(:conditions => "essay_id IN (#{essays_ids.join})")
    (my_comments + my_corrections).sort_by{|x| x.created_at}.reverse[0...limit]
  end

wuputah

# If set to 1, InnoDB will flush (fsync) the transaction logs to the
# disk at each commit, which offers full ACID behavior. If you are
# willing to compromise this safety, and you are running small
# transactions, you may set this to 0 or 2 to reduce disk I/O to the
# logs. Value 0 means that the log is only written to the log file and
# the log file flushed to disk approximately once per second. Value 2
# means the log is written to the log file at each commit, but the log
# file is only flushed to disk approximately once per second.
innodb_flush_log_at_trx_commit = 1